ggally is a ggplot2 extension. It allows to build parallel coordinates charts thanks to the ggparcoord() function. Check several reproducible examples in this post.
ggally
ggplot2
ggparcoord()
Data & Functions
Define database and description of functions
Basic parallel coordinates chart
Most basic plot using default parameters
Customized chart
Custom color, theme, general appearance
Scaling
Transform the raw data to a new scale
Highlighting
Highlight a group
